Type-writing machine.



PATENTED JULY 18, 1905.

B. C. STIGKNEY.

TYPE WRITING MACHINE.

APPLICATION IILED MAR. 21, 1903.

FIG!

INVENTEIFL WITNESSES; I 5 7h 7% 7 as/W 4. +415 ATTEIRNEY latented July 18, 1905.

PATENT FFICE.

BURNHAM O. STIOKNEY, OF ELIZABETH, NEW JERSEY, ASSIGNOR TO UNION TYPEWRITER COMPANY, OF JERSEY OITY, NEWV JERSEY, A CORPORATION OF NEW JERSEY.

TYPE-WRITING MACHINE.

SPECIFICATION forming part of Letters Patent N 0. 794,896, dated July 18, 1905.

Application filed March 21, 1903. Serial No. 148,930.

To all whom it may concern.-

Be it known that I, BURNHAM O. STIoKNnY, a citizen of the United States, and a resident of Elizabeth, in the county of Union and State of New J ersey,have invented certain new and useful Improvements in'Type-Writing Machines, of which the following is a specification.

My invention relates to thin type-bar and hanger ball-bearing joints of the class described in the patent to A. T. Brown, No. 653,905, dated July 17, 1900; and its object is to provide for making the joint more comp"act or thinner, so as to enable a full series of hangers, with their type-bars, to be grouped into a smaller compass, which is a desideratum in type-writing machines, especially those of the front-strike variety. I also provide for adjustment of one of the cones of the ballbearing joint relatively to its mate, and I aim to minimize the number of parts, thus conducing to economy of manufacture and reliability in use, as well as favoring compactness of structure.

My invention consists in certain features of construction and combinations of devices hereinafter full y described, and particularly pointed out in the concluding claims.

In the drawings forming part of this specification, Figure 1 is an enlarged sectional View taken on the line a a of Fig. 2. Fig. 2 is a side view of a type-bar and hanger, showing my improvements. Fig. 3 is a side view of the hanger. Fig. 4 is a section taken on the line 5 Z) of Fig. 3. Fig. 5 is a side View, and Fig. 6 a bottom view, of an adjustable cone forming part of the ball-bearing joint.

In the several views like signs denote like parts.

The type-bar 1 works upon a single circular row of bearing-balls 2, carried by a hanger 3, which may be provided with a screw 4 for affixing it to the framing of the writing-machine. The type-bar may be provided with a large eye 5, interiorly V-grooved to form opposing cones 6 and 7, which together form a track for the balls. Within said eye the hanger is provided with an integral cone 8 and an opposing cone 9, which cones taken together also form a track for the balls, the latter cone being adjustably mounted upon or within the former, so as to admit of more or less separation of the cones in fitting the parts together nicely when manufacturing or repairing the machine. For the purpose of such adjustment I provide the cone 9 with a threaded shank 10, which is tapped into a perforation 11, formed in the hanger-cone 8. Said shank may be of large diameter, as illustrated, to insure stability and to facilitate such fine adjustment as is desirable in joints of this class, this object being favored by cutting a thread of line pitch upon the shank. By turningthe screw-cone 9 in one direction or the other it may be adjusted either toward or away from the opposing cone 8.

To overcome the tendency of the cone 9 to work loose by reason of the action of the typebar and the balls thereon, I preferably make the screw portion thereof self-bindingthat is, I make the screw a trifle oversize and then spring it into a binding fit with the threaded hole 11 in the hanger. For this purpose I use a screw or shank having a yielding construction, preferably in the form of a split, as 12, and the screw may also be split transversely at 13, whereby the screw is divided into four prong portions 14:, Fig. 6, which are sufficiently yielding to enable the screw to spring as it is driven into the hole in the hanger. By clamping the screw in this manner it is caused to stick or turn hard, thereby obviating any tendency to jar looseduring the ordinary working of the machine, so that when it is once adjusted to a proper fit of the cones it will remain securely at that point. For effecting the adjustment a nick 15 may be cut in the cone 9 to receive a screw-driver or other tool. 1 preferably make the screw tapering, as illustrated, and form the hole 11 with a taper thread 16 to correspond, thereby to increase the cramping and binding effect as the screw is driven in, so when it is in far enough to make a working fit for the balls the prongs of the screw are considerably sprung, so that much greater force is required to turn the screw than it is subjected to by the action of the type-bar.

It will be seen that the hanger is recessed at 17 to receive the hub of the type-bar, this portion of the hanger being preferably thin or plate-like, so as to lie snugly to the type-bar and occupy but little room, the width of the entire joint being but little,'if any, greater than that of the shank of-a type-bar of usual dimensions and less than the width of the hanger at the supporting arm or stem thereof. The hanger may also comprise an arm or stem 18, provided with a perforation 19 for the screw 4. The type-bar and hanger may of course be otherwise formed within the scope of my invention. It will also be observed that my invention comprises a type-bar and a hanger pivoted together, one of said members (in this instance the type-bar) having an eye and the other of said members (in this instance the hanger) having a ball-track within said eye, and that one of said eye and track elements (preferably the track element) comprises a cone and an opposing self-binding cone sprung into position thereupon; that the split shank 10 is normally too large for the hole 11 and is forced into said hole so as to bind firmly therein; that the head of the cone 9 is substantially flush with the flankof the type-bar; that the combined width of the joint, type-bar, and hanger is butlittle, if any, greater than the width of either the type-bar or hanger, thus conducing to compactness and affording but little space for the admission of dust or grit to the bearing, this result being made practicable by mounting said cone upon its mate, and that the cone 9 and screw 10 may be formed in a single piece. Furthermore, the type-bar swings on ball-bearings in the median plane thereof, so that offset or cranking action is avoided at the bearing.

It is to be understood that my invention includes transpositions and reversals of parts and variations in details of construction of the joint, oneof the leading features of my improvements consisting in the provision for adjusting substantially in the described manner one of the four cones which go to make up the entire ball-race, although not necessarily the particular cone herein given as an illustration.

What I claim as new, and desire to secure by Letters Patent, is-

1. The combination of a typebar and a hanger pivoted together; one of said members having a grooved eye and the other of said members having opposing cones within said eye; one of said cones being tapered and tapped into the other, and being split at its threaded portion, and having its head substantially flush with the flank of said eye member; and a set of bearing-balls being confined between said cones and said eye.

2. The combination of a type-bar having a grooved eye; a hanger having an arm whereon is formed a cone within said eye; a tapered screw tapped into said-cone and split and having a coned head for cooperation with said cone; said coned head being substantially flush with the shank of the type-bar; and a set of bearing-balls being confined between said cones and said eye.

3. The combination of a type bar and hanger, one ofsaid parts having an internallygrooved eye which forms a ball-race situated in the median plane ofthe type-bar, and the other member having oppositely-disposed cones one of which is adjustable, antifrictionballs in said ball-race and cooperating with said oppositely-disposed cones, and a split threaded shank connected to and extending from said adjustable cone.

4:- The combination of a type-bar having an eye with an internal ball-race therein, said ball-race being situated in the median plane of said bar, a hanger that is cut away or recessed at one side thereof and to which the type-bar is pivoted, so that the width of the type-bar and hanger at the joint between the two need not be materially in excess of the width of the typebar, oppositely-disposed cones carried by said hanger, one of said cones being adjustable and having an integral split stem that is received in a tapped opening in the other cone, to afford an adjustment of the adjustable cone and for maintaining it in its adjusted position, and aseries of balls received in said ball-race and cooperating with said cones.

5. The combination of a ty pe-bar having an eye with an internal ball-race therein, said ball-race being situated in the median plane of said bar, a hanger that is cut away or recessed at one side thereof and to which the type-bar is pivoted, so that the width of the type-bar and hanger at the joint between the two need not be materially in excess of the I width of the type-bar, oppositely-disposed cones carried by said hanger and situated within the eye of the type-bar, one of said cones being integral with the hanger and the other adjustable and in the nature of a headed screw with an integral tapered split stem that is received in a tapped opening in the other cone, to afford an adjustment of the adjustable cone and for maintaining itinits adjusted position, and a series of balls received in said ball-race and cooperating with said cones.

6. The combination of a type-bar and hanger, an eye in one of said members with a ball-race in the median plane of the bar, a series of antifriction-balls in said race, two oppositely-disposed cones carried by the other member and with which said balls cooperate, one of said cones being fixed and having a threaded opening that extends therethrough and the other cone being adjustable relatively to the fixed cone, and a split screw received within said threaded opening, to afford IIO a relative adjustment between said cones and to secure the adjustable cone in its adjusted position.

7 The combination of a type -bar and hanger, an eye in one of said members with a V-shaped groove therein, said groove being in the median plane of the bar, a series of antifriction-balls in said groove, two oppositely-disposed cones carried by and projecting from one side of the other member and against which said balls bear, one oi said cones being fixed and having a threaded openingextending therethrough and the other cone being adjustable relatively to the fixed cone, and a split screw carried by the adjustable cone and received within said threaded opening to afford a relative adjustment between said cones and to secure the adjustable cone in its adjusted position.

8. The combination of a typebar and hanger, one of said members being reduced or cut away at one side so that the combined width of the type-bar and hanger at the joint need not materially exceed the width of the type-bar, an eye with a ball-race in one of said members and which ball-race is in the median plane of the type-bar, oppositely-disposed cones carried by the other of said members and against which said cones bear, one of said cones being fixed and having a threaded opening extending through it, and a split screw integral with said. adjustable cone and received within said threaded opening, to afford a relative adjustment between said cones and to hold the adjustable cone in the position to which it is adjusted.

9. The combination of a type-bar having an eye, a V-shaped ball-race within said eye and in the median plane of the type-bar, antifriction-balls in said ball-race, a hanger having a cone integral therewith and against which said balls bear, an adjustable cone carried by the hanger and against which said cones bear, and a split screw that is integral with said adj ustable cone and is received in a threaded opening in said fixed cone, and secures the adjustable cone in its adjusted position.

Signed in the borough of Manhattan, city of New York, in the county of New York and State of New York, this 20th day of March, A. D. 1903.

BURNHAM U. STICKNEY.

Witnesses:

K. V. DONOVAN, M. F. HANNWEBER. 

